I have encounter one unusual case. I have one PC that is connected to one IP phone. This PC is working fine but the IP phone is not working.
The strange part is the IP phone may disconnected itself and would display "IP Configuring". Then it will auto-recover itself around 30 to 50 minutes. The problem is it will auto shutdown and auto recover and the time is unknown. I tried using my labtop but is tested fine and the IP phone is working.
Is there any way to solve the problem? What is the root cause of this problem? Why the data rate will exceed only at some part of the day? I have tried changing the switch ports and cables. However, the problem still persist. Below is the configuration, log and commands that i use to check.
switchport access vlan y
switchport mode access
switchport voice vlan z
switchport port-security maximum 3
switchport port-security aging time 5
switchport port-security violation restrict
srr-queue bandwidth share 10 10 60 20
srr-queue bandwidth shape 10 0 0 0
mls qos trust device cisco-phone
mls qos trust cos
macro description staff
auto qos voip cisco-phone
storm-control broadcast level 20.00 10.00
storm-control multicast level 20.00 10.00
spanning-tree bpduguard enable
spanning-tree guard root
ip verify source
ip dhcp snooping limit rate 15
%SW_DAI-4-PACKET_RATE_EXCEEDED: 16 packets received in 0 milliseconds on Fa/x. (SWITCH-A)
%PM-4-ERR_DISABLE: arp-inspection error detected on Fa/x, putting Fa/x in err-disable state (SWITCH-A)
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet/x, changed state to down
%LINK-3-UPDOWN: Interface FastEthernet/x, changed state to down
%SWITCH_QOS_TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Fa/x, port set to untrusted.
%PM-4-ERR_RECOVER: Attempting to recover from arp-inspection err-disable state on Fa/x (SWITCH-A)
%SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Fa/x, port trust enabled.
%LINK-3-UPDOWN: Interface FastEthernet/x, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet/x, changed state to up
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